Skip to content

Korkean tarkkuuden PPK-jälkilaskenta ilman työpöytäohjelmia

Lataa tukiaseman ja roverin RINEX-tiedostot kaksitaajuuksista differentiaaliratkaisua varten. Liitä DJI MRK -tiedosto dronekuvien tarkkaan geotaggingiin.

Processing needs an account. This panel is a first step: it checks your file and needs no account.

Laske PPK-data

Quick check, no account

Upload an observation file or open a sample to see its quality score and key findings.

One file up to 100 MB (20 MB gzipped), ten checks per day. The file is deleted as soon as the result is ready.

Quick question, so we know you are a person

Choose a file first

No file? Use a public station
Bundled sample

Opens a stored example result straight away and does not use one of your daily checks.

Live archive day

Fetches a station's daily observation file from the public archives and checks it. It needs the person check above and uses one of your daily checks.

Between 2010-01-01 and 2026-10-17 (UTC).
Try:

Apex PPK -laskentamoottorin ominaisuudet

  • Kaksitaajuuksinen kinemaattinen vektorilaskenta roverin ja tukiaseman välillä
  • Tarkkojen satelliittiratojen automaattinen nouto mittausajanjaksolle
  • Antennin vaihekeskuskorjausten automaattinen soveltaminen RINEX-otsikosta
  • Eteen- ja taaksepäin suuntautuva Kalman-suodatus tasoituksella kiinteille kokonaislukuratkaisuille

Geotagging dronefotogrammetriaan

  • DJI Timestamp.MRK -tiedostojen tai ISO-8601-aikaleimalistojen lataus
  • Antennin ja kamerakennon välisen vipuvarsisiirtymän (Lever-arm offset) kompensointi
  • Koordinaattien vienti CSV-muodossa Pix4D-, Agisoft Metashape- ja DJI Terra -ohjelmiin

How to process PPK drone trajectories online

Step-by-step instructions for computing a dual-frequency kinematic baseline on GPS, GLONASS, Galileo and BeiDou, selected per solution, with optional camera-event geotagging.

  1. Upload base and rover observations

    Upload one base and one rover RINEX observation file (.rnx, .obs, .o or .crx, RINEX 2 or 3). Optionally enter the base X/Y/Z coordinates, or let the run use the RINEX header's approximate position instead.

  2. Set elevation mask and mode

    Adjust the elevation mask (0-40°) and, if needed, force SHORT, LONG or AIR processing instead of the automatic 10 km switch.

  3. Add camera events (optional)

    Upload a DJI Timestamp.MRK file or a plain timestamp list to geotag camera exposures, or skip this step and let the run use event epochs already recorded in the rover file.

  4. Run and download

    Submit the job and download the ZIP once it finishes: the .pos trajectory, NMEA, KML, CSV, camera_events.csv and PDF report.

What won't produce a result

Worth checking before you upload, so a run doesn't cost you credits to tell you what your data was missing.

Rover and base sessions recorded at different times, with no shared window

Overlapping base and rover observation spans: PPK solves the window they share, so a flight with no matching base recording has nothing to resolve against.

Only the rover log, with no base station observation file

A base station RINEX file alongside the rover log. PPK is a differential technique and needs both ends of the baseline to solve a trajectory.

A RINEX header with no INTERVAL field, in a file whose epoch spacing is irregular

A declared sampling interval, or regular enough epoch spacing to infer one. The solving parameters depend on knowing the data rate before a run can be configured.

A rover log that did not track a satellite system selected for the solution

Dual-frequency observations of every selected system in both the rover and the base file. GPS, GLONASS, Galileo and BeiDou are chosen per solution, and a selected system with no satellite common to both receivers and the precise orbit has nothing to resolve against.

A Hatanaka-compressed RINEX-2 observation file saved with the .NNd extension

A .crx Hatanaka file, or a plain uncompressed RINEX observation file. The upload accepts .crx for compressed observations, not the older RINEX-2 .NNd naming convention.

Common questions

Miksi valita PPK maasto-RTK:n sijaan?

PPK ei vaadi radio- tai mobiiliyhteyttä dronen ja tukiaseman välillä lennon aikana, mikä poistaa signaalikatkoksista johtuvan datanmenetyksen riskin.

Related technical guides

Standards & Specifications

Apex requires Pro or above and processing credits. View plans and usage costs

Laske PPK-data